Updating Woody X To Backports 4.2.1-14 ?

[Nick Boyce <nick@glimmer.demon.co.uk>]

As part of my efforts to get fonts looking better on my KDE 3.1.4 Woody 
system, I want to update the XFree86 4.1.0-16 that comes with Woody, to 
the XFree86 4.2.1-14 that backports.org makes available.

(There are comments in the archive to the effect that anti-aliasing 
isn't properly supported by XFree86 4.1.0)

With this deb source line :
   deb http://www.backports.org/debian stable xfree86
running "apt-get update; apt-get -s upgrade" gives me messages saying a 
number of X packages will be kept back :
===================< cut >===================
glimmer:/etc/apt# apt-get -s upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages have been kept back
  x-window-system-core xbase-clients xlibmesa3 xlibs xlibs-dev xprt 
xterm
22 packages upgraded, 0 newly installed, 0 to remove and 7  not 
upgraded.
Inst debconf (1.2.35 www.backports.org)
Inst lbxproxy (4.2.1-14.backports.org.1 www.backports.org)
Inst libdps1 (4.2.1-14.backports.org.1 www.backports.org)
Inst libxaw6 (4.2.1-14.backports.org.1 www.backports.org)
Inst libxaw7 (4.2.1-14.backports.org.1 www.backports.org)
Inst proxymngr (4.2.1-14.backports.org.1 www.backports.org)
Inst twm (4.2.1-14.backports.org.1 www.backports.org)
Inst xdm (4.2.1-14.backports.org.1 www.backports.org)
Inst xfs (4.2.1-14.backports.org.1 www.backports.org)
Inst xfwp (4.2.1-14.backports.org.1 www.backports.org)
Inst xfree86-common (4.2.1-14.backports.org.1 www.backports.org)
Inst xserver-common (4.2.1-14.backports.org.1 www.backports.org)
Inst xnest (4.2.1-14.backports.org.1 www.backports.org)
Inst xvfb (4.2.1-14.backports.org.1 www.backports.org)
Inst x-window-system (4.2.1-14.backports.org.1 www.backports.org)
Inst xutils (4.2.1-14.backports.org.1 www.backports.org)
Inst xfonts-100dpi (4.2.1-14.backports.org.1 www.backports.org)
Inst xfonts-75dpi (4.2.1-14.backports.org.1 www.backports.org)
Inst xfonts-base (4.2.1-14.backports.org.1 www.backports.org)
Inst xfonts-scalable (4.2.1-14.backports.org.1 www.backports.org)
Inst xserver-xfree86 (4.2.1-14.backports.org.1 www.backports.org)
Inst xspecs (4.2.1-14.backports.org.1 www.backports.org)
===================< cut >===================

I'd be grateful for anyone's advice here, before I screw up my system.
Am I supposed to do a dist-upgrade to resolve this ?
Would it be better to "apt-get install" some particular meta or base 
package, instead of "upgrading" ?

Thanks in advance
Nick Boyce
Bristol, UK